Add even more of the source

This should be about everything needed to build so far?
2017-03-07 17:14:16 -08:00 · 2017-03-07 17:14:16 -08:00 · 849723c9cf
commit 849723c9cf
parent af3619d4fa
547 changed files with 149239 additions and 0 deletions
--- a/RTCPUtilitiesLib/RTCPAckPacket.h
+++ b/RTCPUtilitiesLib/RTCPAckPacket.h
@ -0,0 +1,151 @@
+/*
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * Copyright (c) 1999-2008 Apple Inc.  All Rights Reserved.
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ *
+ */
+/*
+    File:       RTCPAckPacket.h
+
+    Contains:   RTCPAckPacket de-packetizing class
+
+
+    
+*/
+
+#ifndef _RTCPACKPACKET_H_
+#define _RTCPACKPACKET_H_
+
+#include "OSHeaders.h"
+#include "RTCPAPPPacket.h"
+#include <stdlib.h>
+#include "SafeStdLib.h"
+#ifndef __Win32__
+#include <netinet/in.h>
+#endif
+
+class RTCPAckPacket  : public RTCPAPPPacket
+{
+    public:
+    
+/*
+
+        RTCP app ACK packet
+
+        # bytes   description
+        -------   -----------
+        4         rtcp header
+        4         SSRC of receiver
+        4         app type ('qtak')
+        2         reserved (set to 0)
+        2         seqNum
+
+*/
+
+        //
+        // This class is not derived from RTCPPacket as a performance optimization.
+        // Instead, it is assumed that the RTCP packet validation has already been
+        // done.
+        RTCPAckPacket() : fRTCPAckBuffer(NULL), fAckMaskSize(0) {}
+        virtual ~RTCPAckPacket() {}
+        
+        // Call to parse if you don't know what kind of packet this is
+        // Returns true if this is an Ack packet, false otherwise.
+        // Assumes that inPacketBuffer is a pointer to a valid RTCP packet header.
+        Bool16  ParseAckPacket(UInt8* inPacketBuffer, UInt32 inPacketLength);
+
+        virtual Bool16 ParseAPPData(UInt8* inPacketBuffer, UInt32 inPacketLength);
+
+        inline UInt16 GetAckSeqNum();
+        inline UInt32 GetAckMaskSizeInBits() { return fAckMaskSize * 8; }
+        inline Bool16 IsNthBitEnabled(UInt32 inBitNumber);
+        inline UInt16 GetPacketLength();
+        void   Dump();
+        static void GetTestPacket(StrPtrLen* resultPtr) {} //todo
+        
+        enum
+        {
+            kAckPacketName = FOUR_CHARS_TO_INT('q', 't', 'a', 'k'), // 'qtak'  documented Apple reliable UDP packet type
+            kAckPacketAlternateName = FOUR_CHARS_TO_INT('a', 'c', 'k', ' '), // 'ack ' required by QT 5 and earlier
+        };                  
+    private:
+    
+        UInt8* fRTCPAckBuffer;
+        UInt32 fAckMaskSize;
+
+        Bool16 IsAckPacketType();
+       
+        enum
+        {
+            kAppPacketTypeOffset    = 8,
+            kAckSeqNumOffset        = 16,
+            kAckMaskOffset          = 20,
+            kPacketLengthMask = 0x0000FFFFUL,
+        };                  
+ 
+        
+
+        inline Bool16 IsAckType(UInt32 theAppType) {    return ( (theAppType == kAckPacketAlternateName) || (theAppType == kAckPacketName) );}
+};
+
+
+Bool16 RTCPAckPacket::IsNthBitEnabled(UInt32 inBitNumber)
+{
+    // Don't need to do endian conversion because we're dealing with 8-bit numbers
+    UInt8 bitMask = 128;
+    return *(fRTCPAckBuffer + kAckMaskOffset + (inBitNumber >> 3)) & (bitMask >>= inBitNumber & 7);
+}
+
+UInt16 RTCPAckPacket::GetAckSeqNum()
+{
+    return (UInt16) (ntohl(*(UInt32*)&fRTCPAckBuffer[kAckSeqNumOffset]));
+}
+
+inline UInt16 RTCPAckPacket::GetPacketLength()
+{
+    return (UInt16) ( ntohl(*(UInt32*)fRTCPAckBuffer) & kPacketLengthMask);
+}
+
+
+
+
+/*
+6.6 Ack Packet format
+
+    0                   1                   2                   3
+    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |V=2|P| subtype |   PT=APP=204  |             length            |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                           SSRC/CSRC                           |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                          name (ASCII)  = 'qtak'               |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                           SSRC/CSRC                           |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |          Reserved             |          Seq num              |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                        Mask...                                |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   
+ */
+
+#endif //_RTCPAPPPACKET_H_